EGR Valve explained: p0401 EGR CODE 2000 Saturn SL2 505 CRO & Intake Manifold Coolant leak holding!

EGR Valve explained: p0401 EGR CODE 2000 Saturn SL2 505 CRO & Intake Manifold Coolant leak holding!
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@AllenNix-iz6ev says:

I've had to remove my intake manifold And clean out the ports And do a throttle body cleaning as well ….

@privateupdate3747 says:

Any advice on dead misfire issue. I chased the intake manifold for leaks but there's no response and the dead misfire is on Cyl 3 only

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